Gas-igniting device.



W. GRIX. GAS IGNITING DEVICE. APPLICATION FILED 001*. 28, 1908.

Patented Sept. 7, 1909. 2 SHEETS-SHEET 1.

0'. rlmwumnammms, wAsmmlToN. m c.

w. GRIX. v GAS IGNITING DEVICE.

APPLIOATIOH FILED 001'. 2B, 1908.

Patented Sept. 7, 1909. 2 BHEE'ISBHEET 2.

m/vf/vrafi W aZdemar 651112;

,4 from/[fa B. GRAHAM 00.. Puma umon WALDEMAR GRIX, or scHoNEBnao, NEARBERLIN, GERMANY.

GAS-IGNITING DEVICE.

Specification of Letters Ifatent.

Patented Sept. '7, 1909.

Application filed October 28, 1908. Serial No. 459,888.

To all whom it may concern:

Be it known that I, WALDEMAR GRIx, a subject of the King of Prussia,residing at Schtineberg, near Berlin, in the Kingdom of Prussia andGerman Empire, have invented new and useful Improvements in Gas-IgnitingDevices, of which the following is a specification. I I I My inventionrelates to agas igniting device consisting of an igniter'proper, such asa platinum pilule, an electric spark former or an incandescence wire,which is carried directly or through the agency of suitable parts by acompensation rod, that is, by a rod made by fastening together twostrips of metals having different coefiicients of expansion, so that,after the gas is ignited, said rod is bent by the heat and moves theigniter out of the zone of the hot gases.

In the accompanying drawings illustrating my invention Figure 1 is aside elevation and Fig. 2 a plan view of one construction of theigniting device, Fig. 3 is a side elevation of a lamp cylinder providedwith the igniting device, Fig. 4 shows a modification of the igniterillustrated in Figs. 1 and 2, in which the limb attached to the cylinderis not a. compensation rod, Fig. 5 is a similar view of a secondmodification, in which the limb carrying the igniter pro or is notconstructed as a compensation ro Figs. 6 and 7 represent furthermodifications, which can be used in combination with those shown inFigs. 15. Figs. 8, 9 and 10 show various ways of adapting the device toinverted gas lamps. Fig. 11 represents the preferred method of applyingthe invention to a mica cylinder.

The compensation rod, which is made of two strips of metal a, 5, such asbrass and 1ron or zinc and iron, has two limbs c and 0! (Figs. 1 and 2)so riveted together at e that the strips of metal having the larger co--eflicient of expansion lie on each other. At

the top the limb cl is bent into the form of a hook 7, which is placedover the top of the lamp cylinder (Fig. The top end of the other limb,c, which carries the igniter proper h is bent at right angles andprojects some distance over the edge of the cylinder. The device canalso be so constructed that either the limb attached to the lamp or thatby which the igniter is carried consists of a simple strip of metal. InFigs. 1 and 5 such modifications are shown, 0Z beingthe simple strip inFig. 4 and a in Fig. 5.

fluence of the hot ases.

On opening the gas cook the gas is ignited by the igniter in the wellknown manner, and the igniter remains in the igniting position until thecompensation rod or rods, owing to the unequal expansion of theirconstituent metals, assume the position shown in dotted lines in Figs.3-5, where the igniter is not exposed to the destroying in- As soon asthe flame is extinguished, the igniter, owing to the cooling down of thedevice, returns to its first position, so that the gas is ignited atonce on again turning on the cock.

In the construction shown in Fig. 6 a guide plate z' is attached to thelimb c, which plate, in the igniting position of the limb 0, deflectsthe current of gas toward the igniter. Both this plate and the igniterare moved out of the zone of the hot gases by the compensation rod.

The construction shown in Fig. 7 differs from that shownin Fig. 6 onlyby the fact that the igniter h is attached to the top end of the limb dat a point where it is normally not in the zone of the hot gases. Inorder to bring about the ignition on turning on the gas the guide plate2' is secured to the limb c, which deflects the gas toward the igniterand is afterward moved away from the to of the cylinder, or the like, sothat the hot gases are not deflected toward the igniter.

According to Fig. 8 the device is attached to the outside tube of aninverted gas lamp. The tube is provided with openings at 7: and Z,through the first (is) of which the hooked end f of the limb d ispassed, and the lower ends of both limbs c and 0! pass into the interiorof the lamp through the other opening (Z). As in the construction shownin Fig. 6 the top end of the other limb c is in this case also providedwith the igniter h and guide plate 2', which in the normal position bothproject over the draft opening m of the lam Iii the constructionillustrated in Fig. 9 the device is provided between the outside tubeand the draft pipe. The hooked top end of the limb d fits over the topof said draft pipe, while the other limb c, which carries the igniterl2. and plate 2', in moving back under the influence of the heat of theignited lamp, passes-through a slot n in the outside pipe. For anothertype of invert lamp (Fig; 10), in which there are two draft pipes 0 andp, the device is attached to the outside of one of these pipes. In thisV a a 933, 31

case no limb (Z is required, and the compensation rod is riveted to thedraft pipe, which replaces the limb cl of the other constructions. Thebottom end of the compensation rod isattached to the clip g, whichpartially embraces the pipe 79,

When amica cylinder is used for ordinary gas lamps the compensation rod0 can be fastened thereto, as shown in Fig. 11. In this case also nolimb d is required.

What I claim and desire to secure by Letters Patent of the United Statesis 1- 1. An automatic igniting device for gas lamps, which comprises incombination, a rod consisting of two strips of metal fastened togetherand having different heat coefiicients of expansion, a limb fastened tosaid rod also consisting of two strips of metal fastened together andhaving different heat coefficients of expansion, and a an igniteradapted to be moved on heating said rod and said limb, substantially as,and for the purpose, set forth. r

2. In an automatic gas igniting device, the combination With a rodconsisting of two strips of metal fastened together and having differentheat coefficients of expansion, of an igniter adapted to be moved bysaid rod, and a gas deflecting plate also adapted to be moved by saidrod, substantially as, and for the purpose, set forth.

3. An automatic igniting device for gas lamps, which comprises incombination, a rod consisting of two strips of metal fastened togetherand having different heat coefficients of expansion, an igniter, and agas deflecting plate adapted to be moved by said rod, substantially as,and for the purpose, set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

V "WALDEMAR GRIX.

\Vitnesses:

HENRY I-IAsPnR, WOLDEMAR HAUPT.

